Astronomy and Astrophysics – Astronomy
Scientific paper
May 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011apj...732...62p&link_type=abstract
The Astrophysical Journal, Volume 732, Issue 2, article id. 62 (2011).
Astronomy and Astrophysics
Astronomy
2
Astrochemistry, Circumstellar Matter, Methods: Numerical, Stars: Agb And Post-Agb, Stars: Winds, Outflows
Scientific paper
Based on its abundance, high bond energy, and recent measurements of its vapor pressure SiO is a natural candidate for dust nucleation in circumstellar outflows around asymptotic giant branch stars. In this paper, we describe a model of the nucleation and growth of silicate dust in such outflows. The sensitivity of the model to varying choices of poorly constrained chemical parameters is explored, and the merits of using scaled rather than classical nucleation theory are briefly considered. An elaboration of the model that includes magnesium and iron as growth species is then presented and discussed. The composition of the bulk of the grains derived from the model is consistent with olivines and pyroxenes, but somewhat metal-rich grains and very small, nearly pure SiO grains are also produced.
Ferguson Frank Thomas
Nuth Joseph Andrew III
Paquette John A.
No associations
LandOfFree
A Model of Silicate Grain Nucleation and Growth in Circumstellar Outflows does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A Model of Silicate Grain Nucleation and Growth in Circumstellar Outflows, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Model of Silicate Grain Nucleation and Growth in Circumstellar Outflows will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1747841